Thank you rewards false advertising

Ive been paying cash for all my goods at edgars in order to save up the Reward points. Eventually I lost all my points because the card expired and doesnt work anymore. While paying, the lady behind the till says she will give me a new card. So she rings up all the things I want to pay for, and afterwards starts the process of signing me up for a new card. After this I asked her if she swipe my new rewards card for the stuff I just bought, and she says no. She was suppose to do it while I was making my payment. Seriously guys what is the use of this reward cards if your card expires and the sales staff doesnt even swipe the cards! These reward cards are simply False advertising just to pull in client to only later ***** them over